MKV => AVCHD (determining the filesize HELP!)

[likwid8]

I've gotten a few x264 (h264) media files which are 4.11GB in size and after using an (.exe) which converts it to AVCHD, it creates am (.iso) to an exact 4.3GB file.


I would like to know, if I grab a mkv how would I determine if it will fit on a DVD9 disc after using tsmuxer? I've seen alot of 1080p mkv's which are about 7.8-8.1GB... Would it be safe to assume after converting it, it should still be under a DVD9 size?

Maybe a calculator or something? I already know all about converting the audio profile to 4.1. Any ideas thanks?

[noemi7]

You don't need to convert (perhaps lossy) MKV, just unpack the contents with MKVtoolnix or MKVEXtractGUI, and mux files to BR/AVCHD disc with TSMuxer. You can remux MKV to BR/AVCHD directly in TSMuxer as well.

Demuxed files size should be almost identical with source MKV as h264 and audio (AC3 or MP2) are already heavy compressed. I didn't test how MKV stores LPCM, if it compress much or not.

[guns1inger]

I would not assume. There is a lot of overhead (a surprising amount) in the M2TS and AVCHD formats. Yes, the demxued files should total around the same size as the source mkv (smaller if there is a lot of extraneous crap in the mkv file), but the remuxed file might be up to 8% larger than the source.

[noemi7]

Yes remuxed file(s) will be bigger as the packet size of M2TS is larger than MKV and TS.

[t0nee1]

You can always use the 'Split & Cut' feature in TSmuxer,if it exceeds DVD9 size....Or maybe re-encode your audio using a lower bitrate and remux...